Display panel and display device

ABSTRACT

The disclosure relates to the technical field of displaying, and discloses a display panel and a display device. The display panel according to the present disclosure is divided into a display area and a peripheral area surrounding the display area, the display panel includes: a first substrate and a second substrate connected by a sealant, wherein the sealant is in the peripheral area; and a black matrix layer located between the first substrate and the second substrate, wherein a part of the black matrix layer in the peripheral area is provided with an opening for blocking static electricity, and the opening is located at an outer side of the sealant.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims the priority to Chinese Patent Application No. 201720957184.X, filed on Aug. 2, 2017, the content of which is hereby incorporated by reference in its entirety.

FIELD

The disclosure relates to the technical field of displaying, and discloses a display panel and a display device.

BACKGROUND

As the most extensively used display technology at present, the liquid crystal display technology has been widely used in televisions, mobile phones and public information display. A liquid crystal screen includes an array substrate and a opposite substrate, the array substrate includes a thin film transistor array circuit driving liquid crystal display and pixel electrodes connected with the thin film transistor array circuit, the opposite substrate and the array substrate are opposite to each other to form the liquid crystal screen, and the liquid crystal materials are sealed between the array substrate and the opposite substrate.

ESD (Electro-Static discharge) is one of the major factors influencing the manufacturing yield of electronic products. In the electronic products, static electricity can be generated in many ways, for example, static electricity can be generated via contact, friction and induction between devices. When the static electricity in the electronic products is accumulated to a certain extent, electro-static discharge occurs, thereby leading to electro-static damage. The electro-static damage caused by ESD on the electronic products includes sudden damage and potential damage. Sudden damage refers to such damage during which the devices are seriously damaged with a loss of functions; and such damage can usually be found out in the quality detection step in the production process of electronic products. Potential damage refers to such damage during which the devices are lightly damaged with the functions being not lost; and such damage is not easily discovered in the quality detection step in the production process of electronic products, however, in the use process of the electronic products, such damage may enable the performance of the electronic products to be instable, and shorten the service life.

SUMMARY

The present disclosure provides a display panel, wherein the display panel is divided into a display area and a peripheral area surrounding the display area, and the display panel includes: a first substrate and a second substrate connected by a sealant, where the sealant is in the peripheral area; a black matrix layer located between the first substrate and the second substrate, where a part of the black matrix layer in the peripheral area is provided with an opening for blocking static electricity, and the opening is located at an outer side of the sealant.

The present disclosure further provides a display device which includes the display panel of any of the above display panel.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a sectional schematic diagram of a first display panel according to an embodiment of the present disclosure;

FIG. 2 is a sectional schematic diagram of a second display panel according to an embodiment of the present disclosure;

FIG. 3 is a sectional schematic diagram of a third display panel according to an embodiment of the present disclosure;

FIG. 4 is a schematic diagram of a first structure of the opening on the black matrix layer according to an embodiment of the present disclosure;

FIG. 5 is a schematic diagram of a second structure of the opening on the black matrix layer according to an embodiment of the present disclosure;

FIG. 6 is a schematic diagram of a third structure of the opening on the black matrix layer according to an embodiment of the present disclosure.

DETAILED DESCRIPTION OF THE EMBODIMENTS

A clear and complete description will be given below on the technical solutions of the embodiments in the present disclosure in combination with the accompanying drawings of the embodiments of the present disclosure, and apparently the embodiments described below are only a part but not all of the embodiments of the present disclosure. Based upon the embodiments of the present disclosure, all the other embodiments which can occur to those skilled in the art without any inventive effort shall all fall into the protection scope of the present disclosure.

As shown in FIGS. 1, 2 and 3, the present disclosure provides a display panel, where the display panel is divided into a display area 11 and a peripheral area 12 surrounding the display area 11, and the display panel includes: a first substrate 2 and a second substrate 3 connected by a sealant 4, where the sealant 4 is in the peripheral area 12; a black matrix layer 5 located between the first substrate 2 and the second substrate 3, where a part of the black matrix layer 5 in the peripheral area 12 is provided with an opening 51 for blocking static electricity, and the opening 51 is located at the outer side of the sealant 4.

In the display panel according to the present disclosure, since the part of the black matrix layer 5 in the peripheral area 12 is provided with the opening 51 for blocking static electricity, external static electricity can be weakened through the opening 51 of the black matrix layer 5, so that the static electricity cannot enter the display area 11 of the display panel.

The edge of the part of the black matrix layer in the peripheral area is located between the sealant and the edge of the first substrate; or the edge of the part of the black matrix layer in the peripheral area is located between the sealant and the edge of the second substrate.

Therefore, the display panel according to the present disclosure can reduce the static electricity entering the inside of the display panel, and lower the occurrence rate of undesirable static electricity of the display panel.

The first substrate 2 and the second substrate 3 may be provided with a first planarization layer 91 and a second planarization layer 92 respectively. Therefore, the above opening 51 can be filled with the first planarization layer 91 or the second planarization layer 92, and as shown in FIG. 1, the opening 51 is filled with the first planarization layer 91.

Further, the above display panel further includes a color filter layer 6 at least filled in a light transmitting area of the black matrix layer 5 in the display area 11. The setting of the color filter layer 6 can enable the display panel to realize color display. The above filter color layer 6 can include three colors of RGB, and can also include four colors of RGBW.

In order to prevent light leakage of the display panel at the opening 51, the above opening 51 is filled with a color filter layer 6. During preparation, the color filter layer 6 can directly extend to the upper side of the opening 51, so the preparation process is simple. The filled color filter layer can be a blue filter layer.

Of course, the opening 51 can also be filled with other materials, such as light shading materials, etc. In one optional embodiment according to the present disclosure, the opening 51 is filled with insulating materials. The insulating materials can improve the effect of the opening 51 in blocking static electricity.

The specific shapes and the specific positions of the opening 51 according to the present disclosure can be set in many ways. The opening 51 can be arranged on the whole periphery of the sealant 4, or the opening 51 can be arranged on part of the area of the periphery of the sealant 4, and the size of the opening 51 can be set according to actual needs.

As shown in FIG. 4, in one optional embodiment according to the present disclosure, the opening 51 includes an annular opening arranged to surround the sealant 4. The annular opening is set to enable the display panel to block static electricity in the whole peripheral direction.

As shown in FIG. 5, in another optional embodiment according to the present disclosure, the opening 51 includes multiple sub-openings which are distributed at intervals along the periphery of the sealant 4.

As shown in FIG. 6, in still another optional embodiment according to the present disclosure, the opening 51 includes strip-shaped openings arranged at each side of the sealant 4, and the length L of each strip-shaped opening is greater than or equal to one half of a side length of the display panel at a side where the strip-shaped opening is located.

The width W of the opening 51 is greater than or equal to 100 microns, such that the opening 51 can play a better role in blocking the static electricity from entering the display area 11. Specifically, the width of the opening 51 can be 105 microns, 110 microns, 120 microns, 125 microns, 130 microns, or 150 microns, etc., and the other widths will not be repeated redundantly herein.

As shown in FIG. 1 and FIG. 2, the above display panel further includes a liquid crystal layer 7, where the black matrix layer 5 is arranged on the first substrate 2, the second substrate 3 is an array substrate, and the liquid crystal layer 7 is arranged between the black matrix layer 5 and the array substrate.

As shown in FIG. 3, the above display panel further includes a liquid crystal layer 7, where the second substrate 3 is provided with an array layer 8, the black matrix layer 5 is arranged on the array layer 8, and the liquid crystal layer 7 is arranged between the black matrix layer 5 and the first substrate 2.

The above array layer 8 includes a passivation layer, a pixel electrode layer, a common electrode layer, a gate line, a data line, etc. The above display panel further includes film layers such as an alignment film of the second planarization layer 92, and these will not be repeated redundantly herein.

The display panel according to the present disclosure can in a TN (Twisted Nematic) mode, an IPS (In-Plane Switching) mode, an FFS (Fringe Field Switching) mode or a VA (Vertical Arrangement) mode.

The present disclosure further provides a display device which includes the display panel according to any one of the above embodiments, since the above display panel can reduce the static electricity entering the inside of the display panel, and lower the occurrence rate of undesirable static electricity of the display panel, therefore, the display device according to the present disclosure has a favorable display effect.

In the present embodiment, the display device can also include a circuit board, a drive circuit and other components. For the other components of the display device which are not described in detail in the present embodiment, please refer to the prior art, and these components will not be repeated redundantly herein. The specific types of the display device are not limited, for example, the display device can be a liquid crystal display, a tablet computer, a mobile phone, an electronic book, a liquid crystal television, etc.

Evidently, those skilled in the art can make various modifications and variations to the present disclosure without departing from the spirit and scope of the present disclosure.

Accordingly the present disclosure is also intended to encompass these modifications and variations thereto so long as the modifications and variations come into the scope of the claims appended to the present disclosure and their equivalents. 

1. An organic electroluminescent display panel, comprising a substrate, and a pixel defining layer and a light emitting layer arranged on the substrate, wherein the pixel defining layer comprises a first pixel defining layer arranged on the substrate, and a second pixel defining layer arranged on the first pixel defining layer; the first pixel defining layer comprises a plurality of first opening areas, each first opening area defines a sub-pixel light emitting area, and the light emitting layer is arranged in the first opening areas; and the second pixel defining layer comprises a plurality of second opening areas, each second opening area defines a virtual pixel area, and each virtual pixel area comprises at least two adjacent sub-pixel light emitting areas in a same color; wherein the plurality of second opening areas are categorized into several groups; each group of second opening areas extending along a first direction and comprising several second opening areas spaced apart from each other along the first direction, and wherein respective groups of second opening areas are spaced apart from each other along a second direction perpendicular to the first direction; and wherein sidewalls of each first opening area are sloped and inclined at a sharp angle, and a top area of each first opening area is smaller than a bottom area thereof
 2. The organic electroluminescent display panel according to claim 1, wherein a material of the first pixel defining layer is a lyophilic material and a material of the second pixel defining layer is a lyophobic material.
 3. The organic electroluminescent display panel according to claim 1, wherein a thickness of the first pixel defining layer ranges from 400 nm to 600 nm.
 4. The organic electroluminescent display panel according to claim 1, wherein a thickness of the second pixel defining layer ranges from 800 nm to 2200 nm.
 5. The organic electroluminescent display panel according to claim 2, wherein a third pixel defining layer is arranged between the first pixel defining layer and the second pixel defining layer, wherein the third pixel defining layer comprises a plurality of third opening areas corresponding to the first opening areas in a one-to-one manner, each third opening area is not larger than a corresponding first opening area, and a material of the third pixel defining layer is a lyophilic material, wherein a lyophilic performance of the material of the first pixel defining layer is higher than that of the material of the third pixel defining layer.
 6. The organic electroluminescent display panel according to claim 3, wherein a third pixel defining layer is arranged between the first pixel defining layer and the second pixel defining layer, wherein the third pixel defining layer comprises a plurality of third opening areas corresponding to the first opening areas in a one-to-one manner, each third opening area is not larger than a corresponding first opening area, and a material of the third pixel defining layer is a lyophilic material, wherein a lyophilic performance of the material of the first pixel defining layer is higher than that of the material of the third pixel defining layer.
 7. The organic electroluminescent display panel according to claim 4, wherein a third pixel defining layer is arranged between the first pixel defining layer and the second pixel defining layer, wherein the third pixel defining layer comprises a plurality of third opening areas corresponding to the first opening areas in a one-to-one manner, each third opening area is not larger than a corresponding first opening area, and a material of the third pixel defining layer is a lyophilic material, wherein a lyophilic performance of the material of the first pixel defining layer is higher than that of the material of the third pixel defining layer.
 8. The organic electroluminescent display panel according to claim 5, wherein sidewalls of each third opening area are sloped and inclined at a sharp angle, and a top area of each third opening area is smaller than a bottom area thereof.
 9. The organic electroluminescent display panel according to claim 5, wherein a thickness of the third pixel defining layer ranges from 100 nm to 200 nm.
 10. The organic electroluminescent display panel according to claim 1, wherein each virtual pixel area comprises four sub-pixel light emitting areas in a same color, which are arranged in two rows by two columns.
 11. A method for manufacturing an organic electroluminescent display panel, the method comprising: forming a first pixel defining layer on a substrate, wherein the first pixel defining layer comprises a plurality of first opening areas, each first opening area defines a sub-pixel light emitting area; forming a second pixel defining layer on the substrate formed with the first pixel defining layer, wherein the second pixel defining layer comprises a plurality of second opening areas, each second opening area defines a virtual pixel area, and each virtual pixel area comprises at least two adjacent sub-pixel light emitting areas in a same color; printing ink comprising a light emitting layer material in the second opening areas through an inkjet printing device; and drying the ink to form a light emitting layer in the first opening areas; wherein the plurality of second opening areas are categorized into several groups; each group of second opening areas extends along a first direction and comprises several second opening areas which are spaced apart from each other along the first direction; and respective groups of second opening areas are spaced apart from each other along a second direction perpendicular to the first direction; and wherein sidewalls of each first opening area are sloped and inclined at a sharp angle, and an top area of each first opening area is smaller than a bottom area thereof.
 12. The method according to claim 11, wherein the forming the first pixel defining layer on the substrate comprises: depositing a thin film of the first pixel defining layer on the substrate, wherein a material of the thin film of the first pixel defining layer is a lyophilic material; and patterning the thin film of the first pixel defining layer to form the first pixel defining layer.
 13. The method according to claim 12, wherein the forming the second pixel defining layer on the substrate formed with the first pixel defining layer comprises: forming a thin film of the second pixel defining layer on the substrate formed with the first pixel defining layer, wherein a material of the thin film of the second pixel defining layer is a lyophobic material; and patterning the thin film of the second pixel defining layer to form the second pixel defining layer.
 14. The method according to claim 12, wherein after the thin film of the first pixel defining layer is deposited, and before the first pixel defining layer is formed, the method further comprises: depositing a thin film of a third pixel defining layer on the thin film of the first pixel defining layer, wherein a material of the thin film of the third pixel defining layer is a lyophilic material, and a lyophilic performance of the material of the thin film of the first pixel defining layer is higher than that of the material of the thin film of the third pixel defining layer; and the patterning the thin film of the first pixel defining layer to form the pixel defining layer comprises: dry etching the thin film of the third pixel defining layer, and the thin film of the first pixel defining layer to form the third pixel defining layer and the first pixel defining layer respectively, wherein the third pixel defining layer comprises a plurality of third opening areas corresponding to the first opening areas in a one-to-one manner, and an etch selectivity of the thin film of the first pixel defining layer to the thin film of the third pixel defining layer is more than
 1. 15. The method according to claim 13, wherein after the thin film of the first pixel defining layer is deposited, and before the first pixel defining layer is formed, the method further comprises: depositing a thin film of a third pixel defining layer on the thin film of the first pixel defining layer, wherein a material of the thin film of the third pixel defining layer is a lyophilic material, and a lyophilic performance of the material of the thin film of the first pixel defining layer is higher than that of the material of the thin film of the third pixel defining layer; and the patterning the thin film of the first pixel defining layer to form the pixel defining layer comprises: dry etching the thin film of the third pixel defining layer, and the thin film of the first pixel defining layer to form the third pixel defining layer and the first pixel defining layer respectively, wherein the third pixel defining layer comprises a plurality of third opening areas corresponding to the first opening areas in a one-to-one manner, and an etch selectivity of the thin film of the first pixel defining layer to the thin film of the third pixel defining layer is more than
 1. 16. The method according to claim 11, wherein a thickness of the first pixel defining layer ranges from 400 nm to 600 nm.
 17. The method according to claim 11, wherein a thickness of the second pixel defining layer ranges from 800 nm to 2200 nm.
 18. The method according to claim 14, wherein sidewalls of each third opening area are sloped and inclined at a sharp angle, and a top area of each third opening area is smaller than a bottom area thereof
 19. The method according to claim 15, wherein sidewalls of each third opening area are sloped and inclined at a sharp angle, and a top area of each third opening area is smaller than a bottom area thereof
 20. The method according to claim 11, wherein each virtual pixel area comprises four sub-pixel light emitting areas in a same color, which are arranged in two rows by two columns. 